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Synthesis of Acid Anhydrides via the Thermal or Photochemical Catalytic Hydrocarbonylation of Alkenes

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    Research Article

    Synthesis of Acid Anhydrides via the Thermal or Photochemical Catalytic Hydrocarbonylation of Alkenes
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    ACS Catalysis

    Cite this: ACS Catal. 2025, 15, 3, 2576–2583
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    https://doi.org/10.1021/acscatal.4c07289
    Published January 28, 2025
    Copyright © 2025 American Chemical Society
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    Abstract

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    The synthesis of symmetric aliphatic anhydrides with alkyl chains longer than C3 is typically accomplished by using traditional coupling methods, which often involve expensive and hazardous dehydrating agents with poor atom economy. A catalytic method for producing high-nuclearity (C3+) aliphatic anhydrides from common alkenes, carboxylic acids, and carbon monoxide gas using low loadings of a palladium catalyst system is reported here. Benzoyl chloride proved to be essential for avoiding the formation of Pd black and preserving high catalyst activity. Mechanistic studies of cationic and neutral acyl chloride complexes emphasize the crucial role of benzoyl chloride in maintaining the catalytic performance. A complementary catalytic method using visible light irradiation produces anhydrides at lower pressures of CO and with improved regioselectivities relative to those of the thermal reaction.

    Copyright © 2025 American Chemical Society

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    Supporting Information

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    • Experimental procedures and spectral data (PDF)

    • Single-crystal X-ray crystallographic data for Pd-3, CCDC 2357991 (CIF)

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    ACS Catalysis

    Cite this: ACS Catal. 2025, 15, 3, 2576–2583
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acscatal.4c07289
    Published January 28, 2025
    Copyright © 2025 American Chemical Society
    Request reuse permissions

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